Growing family? Whether you have one little or more on the way, Wave’s patented One plus One® system lets you convert your single stroller to carry both your newborn & toddler – with no need to purchase anything additional. The Onyx fashion features sustainable outer fabrics woven exclusively with yarn from recycled plastic bottles – there are 56 bottles in the seat unit and 75 in the bassinet. Features: -RU: bassinet - up to 19 lbs.; stroller seat - babies 6 months up to 55 lbs. -Wave includes: Textured platinum chassis, bassinet, reversible stroller seat, reversible bamboo seat liner, UPF 50+ canopies, 2 insect nets, 2 rain covers, basket, cup holder and tandem connectors. -Single to double ready. -Create 7 configurations straight out of the box. -Super-strong magnesium alloy frame. -The reversible seat has three adjustable positions, including lie-flat, and an adjustable calf support. For babies 6 months old, up to 55 lbs. -Designed for greater baby comfort and added ease-of-use, the Genius™ harness system features one-motion backpack-style adjustments, deeper-padded chest and harness pads and our new magnetic buckle. -Suitable for overnight sleeping, the ventilated bassinet is lined in the softest natural bamboo fabric, which has anti-bacterial properties & helps regulate temperature. -Comfortable padded seat liner has soft naturally anti-bacterial bamboo fabric on the one side, and soft jersey on the reverse side. -Includes a pair of tandem seat adaptors so you can use as a double stroller right away. -The bassinet and seat unit's canopies are UPF50+, extend and feature pop-out sun visors for ultimate coverage, and peek-a-boo windows for parents. -Large puncture proof tires and 4-way suspension provide the smoothest of rides. -5-position height adjustable handle. Product dims (assembled): 23"w x 43"d. Handle height 37-43"h. Product dims (folded): 23"w x 15"d x 37"h. Car seat adaptor (included) - SX5135 /Compatible with Maxi Cosi Mico 30, Maxi Cosi Mico Max 30, Nuna Pipa, Nuna Pipa Lite, Cybex Aton, Cybex Aton M, Cybex Cloud Q and Clek Liing infant car seats. Infant car seat sold separately.